Inking mechanism for rotary printing presses



June 5, 1945. H. M. BARBER 2,

INKING MECHANISMS FOB ROTARY PRINTING PRESSES Filed May 26, 1943 2Sheets-Sheet 1 "MIMI! June 5, 1945.- H. M. BARBER r 2,377,663

INKING MECHANISMS FOR ROTARY PRINTING PRESSES Filed May 26, 1943 2Sheets -Sheet 2 mviv rox.

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Patented June 5, 1945 .1 INKING MECHANISM FOB/ROTARY l l PRINTINGPRESSESHoward M. Barber, Pawcatuck, Conn., asslgnor,

to C.]B.,Cottrell & Sons Company, Westerly,

13.1., a corporation of Delaware Application May 26, 1943, Serial No.488,512 6 Claims. (01. 101+351) In rotary printing presses, especiallywhere quick drying inks and drying apparatus are used it'is necessary torun the' pressa sufficient time to bring the heating elementx'of the.drying apparatus up to the required temperature to quickly andefliciently dry the impressions. During this warming-up period the inksuppliedto the dis tribution should be. cut off to prevent its loadin upwith an excess amount of ink before the actual printing operation. it

'My invention comprises novel means acting on the oscillating ductorroller for temporarily stopping the flow of ink from the ink supplyroller toa roller of the ink distribution during the warming-up periodof the drying apparatus and to thereafter reestablish the flow of ink tothe ink distribution without affecting the drive for the ink supplyroller, thereby keeping the ink at all times in propercondition to besupplied to the distribution. a a l My invention also comprises means ofthe above character in which the operation of thefsaid means will notafiectjthe angular move'mentof the ductor roller nor its initialadjustment for parallelism with the ink supply and distribution rollersle l My invention also comprises a manually eperated means for renderingthe ductorroller operative or inoperative to transfer the ink from "theink supply roller to the distribution roller while thepressis running orat rest.

i A practical embodiment of my invention is represented in connectionwith the oscillating ductor 3 roll of an ink distribution in which theink supply or fountain roll is intermittently driven.

Fig. 1 represents 'adetail side elevation of so much of an inkdistribution as includes my ductor roller throw-off device; the elementsbeing in the positions they assume when the ductorroller has beenrendered inoperative to transfer the ink from the supply rollerto thedistribution roller.

Fig. 2 represents, a detail end elevation partly in section atone of thesidefra'mes, with theink r Fig. 7 represents a detail section takeninthe plane of the line VII-VII of Fig. 6.

The ink fountain is denoted by I, the iriksupply or fountain roller by2, the oscillating ductor roller by 3 and the ink distribution roller by4.

The ink supplyroller 2 may be intermittently driven from a continuouslyrotating shaft 5 by providing the shaft with a crank disc 6 connected toone end of a rod 1, the other end of said rod being connected to onearms of a rock lever pivoted to swing on the'ink supply roller shaft 9,the other arm ID of which lever carries a pawl I I in engagement withthe ratchet wheel lzfast on the said shaft 9 of the ink supply roller.

Each end of the shaft l3 of the ductor roller 3 is journaled in anoscillating end support which comprises an inner member M, an outermember "I 5 and an intermediate socket member 16. These members l4 andI5 are pivoted on an end eccentric portion ll of a handshaft l8journaled to rock in the side frames.

The innermember M of the end support has an uprisin arm l9 provided withoutwardly directed flanges 20 and 2|. between which flanges the shank 22of the socket member 16 is located. Theouter member l5. hasan. uprisingarm 23 alsolocated betweenthe flanges 20 and 2| against the outer faceof the shank 22. of. the socket member 15. I i

A bolt 24 passes through the arm 23 of the outer member 15 and anenlarged hole.25 inthe shank 22 of the socket member l6. into threadedengagement with thhe arm IQ of the inner member l4 of the end support tolock the three members together. w

The outer member I5 is also provided with a depending arm 26 having astud or roller 27 located in the groove 28 of a box cam 29 fast on thecontinuously rotating shaft 5. g

It will be seen that the rotary movement of the shaft 5 will cause theend supports to rock and thereby oscillate the ductor roller 3betweenthe ink supply and distribution rollers.

Thelopposite ends of the ductor roller may be l4. When the bolt 24 isreleasedthescrew 30 may be turned in either direction to adjust theeither direction to change the'angular position of the inner and outermembers [4 and-l5 with respect to the socket member l6.

It will be understood that afterthe positions of both ends of the ductorroller'shaft have been accurately adjusted both radially and arcuatelyto bring the ductor roller intoits proper position with respect to theink supply and distribution rolls, the bolts 24 may be tightened to'lockthe three members, of each. end support together in their adjustedpositions. I

The'manually operated means which I have shown for rendering the ductorroller operative or inoperative to. transfer the ink while the press isrunning or at rest. and without disturbing the initial independentradial and arcuate adjustments of the ductor roller and withoutaffecting the drive for the ink supply rollerwhen the press is runningand without affecting the angular movement of the ductor. roller isshown as comprising the following elements: The hub 35 of a hand crankis made fast'to one'eccentric end portion [1 of the handshaft l8 as by across pin 33. The crank arm '31 is provided withinwardly andoutwardlydirected hollow lugs 38 and 39 in whichthe slidable shank-40 of a handle4| is yieldingly held at the limit of its inward or lockingv movementbya suitable spring 42 to cause the inner end of the'shank 40 to projectinto either the hole 43 or the hole 44 in a bracket 45 secured by bolts46, 4'! to the adjacentside frame I initially adjusted forparallelismwhile the hand crank is in its normal operative position with the innerend of its shank projected into the bracket hole 44 as shown in Fig. 3.When the ductor roller is to be thrown off or tripped to its inoperativeposition theinner end'of the handle shank 401 iswithdrawn from itslocked position in the hole 44 and the hand crank is swung along thebracket45 and the inner end of the handle shank 40 is projected into thehole 43 in the bracket as shown in 'Fig. 1 for locking the ductor rollerin its thrown-off or tripped position. This swinging movement of thehand crank will rock the hand shaft I8 and its eccentrics II to move theend supports radially to move the ductor rollerinto and out of itsoperative position without disturbing its angular movement. I I

It will also be seen that the relative location of the ductor rollerwith respect to its hand shaft is changed toprevent'the ductor rollerfrom "contacting with the ink supply and distribution rollers withoutinterfering with the rotative movement of the said ink supply roller.

1. In an inking mechanism for rotary printing presses, ink supply,distribution and ductor rollers, a hand shaft, end supports for theductor roller eccentrically pivoted on the hand shaft, means forinitially adjusting the end supportsto bring the ductor roller intoparallelism with the ink supply and distribution rollers, means forretatingthe ink supply roller and' for oscillating the end supports andthereby the ductor roller .between the ink supply and distributionrollers,

and means for rocking the hand shaft to move the ductor roller to itsoperative and inoperative positions without affecting its angularmovement and initial adjustment.

' 2. In an inking mechanism for rotary printin presses, ink supply,distribution and ductor rollers, a hand shaft, end supports'for theductor roller eccentrically pivoted on thehand shaft,

means for initially adjusting the end supports radially'and arcuatelytobring the ductor roller into parallelism with the ink supply anddistribuers, a hand shaft,'end supports for the ductor rollereccentrically pivoted on the hand shaft,

means for initially adjusting the end supports to bring the ductorroller intoparallelism with the ink supply and distribution rollers,means for rotating the ink supply roller and'for oscillating the endsupports and'thereby the ductorroller between the ink supply anddistributionrollers, means for rocking the hand shaft to movethe ductorroller to its operative and inoperative-positions withoutaffecting itsangular movement and initial adjustment, andmeans'for releasably lockingthe hand shaft'in its two positions. 4. In an inking mechanism forrotary printing presses, ink supply, distribution and ductor rollers, .ahand shaft, end supports fortheductor rollereccentrically pivoted on thehandshaft,

means for initially adjusting the end supports radially and 'arcuatelyto bring the ductor roller into parallelism with the ink supply anddistribution rollers, means for rotating the ink supply roller and foroscillating the'e nd supports and .thereby the ductor roller betweenthe' ink supply and distribution rollers, means for rockingthe handshaft to'move' the ductor roller to its operative and inoperativepositions without affecting its angular movement and initialadjustments, and means for releasablylocking the hand shaft initstwopositions; I '1 5. In an inking m'echanismior rotary printingpresses, ink supply and" distribution rdllers,' a

, rotary 'drive shaft,v an operativec'onnection be,-

tween the shaft'and the supply'roller'to rotate the roller, a hand shafthaving eccentric 'portions, a ductor roller, end supports therefor piv-'oted on said eccentric portionsan operative con motion between the"drive shaft and said end supports for oscillating the ductor rollerbetween said ink supply and distributingroller's,'means for initiallyadjusting the end supports to bring the ductor roller into parallelismwith t'he'ink supply and distribution rollers, and'means'for rockingthehand shaft to cause: the end supports to move the ductor roller to itsoperative and inoperativeposi.

tions without aife'eting the operative connections between the driveshaft and the ink supply and ductor rollers or the initialadjustment ofthe ductor roller.

6. In an inking mechanism for rotary printing presses, ink supply anddistribution rollers, a rotary drive shaft, an operative connectionbetween the shaft and the supply roller to rotate the roller, a handshaft having eccentric portions, a ductor roller, end. supports thereforpivoted on said eccentric portions, an operativeconnection between thedrive shaft and said end supports for oscillating the ductor rollerbetween said ink supply and distribution rollers, means for initiallyadjusting the ductor roller for parallelism with the ink supply anddistribution rollers, means for rocking the hand shaft to cause the endsupports to move the ductor roller to v its operative and inoperativepositions without affecting the operative connections between the driveshaft and the ink supply and ductor rollers or the initial adjustment ofthe ductor roller and 10 means for releasably locking the oscillatingductor roller in said operative and inoperative positions.

HOWARD M. BARBER.

